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Explain why it is not necessary for a program to be completely free of defects before it is delivered to its customers.
Explain why testing can only detect the presence of errors, not their absence.
Some people argue that developers should not be involved in testing their own code but that all testing should be the responsibility of a separate team. Give arguments for and against testing by the developers themselves.
fluid a available at 10oc is to be heated in a one-shell-pass four-tube-pass exchanger heat using fluid b available at
consider the steel balls from 5.6 except now the air tempincreases with time as tinft325kat where a 0.1875ks.asketch
the system is at rest in the position shown with the 12-lb collar a resting on the spring k 20 lbft when a constant
a particle at rest is located at point 325 with units of ft. it is subjected to an acceleration in units of fts2 of a
a rectangular loop of wire with sides 0.19 and 0.32 m lies in a plane perpendicular to a constant magnetic field see
the drinking water needs of a residential hall with 20 students is to be met by a bubbler type water fountain. the
A size 4-0 (0.15mm diameter) monofilament nylon suture was tested for its stress relaxation properties using a micro-mechanical tester at room temperature. A 20 mm sample was stretched 2 mm over a 20 second period; the force-displacement curve for th..
A collar B of weght W can move freely along thevertical rod. The constant of the spring is k and the spring is unstretched when theta=0. Derive an equation in W thrta k and l that must be satisfied when h collar is in equilibrium.
A vertically mounted piston-cylinder device contains 1.5 kg of water and is being heated over a coal burning stove. During the process, 75 kJ of heat is transferred to the water and heat losses from the side walls amount to 9 kJ.
hot exhaust gases carbon dioxide are cooled from 700 k to 300 k isobarically at 500 kpa. the cooling fluid is
determine the work done in lifting a 250-lb refrigerator 4 ft vertically into a van. alternatively the refrigerator
a liquid food is being heated in a tubular heat exchanger. the inside pipe wall temperature is 110degc. the internal
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